There’s a reason Kevin Bolger has spent his last four summers in Trondheim, Norway, rent free. You could say it started in 2014, when his older brother, Conor, began his Ph.D. work at the Centre for Elite Sports Research in Trondheim. As a doctoral candidate in the center’s neuroscience department, Conor’s work involved lab time. Specifically, lactate and VO2 max testing on Norwegian cross-country and nordic-combined national team members. Conor soon established a relationship with a number...